Which is cheaper, the Hemel HD24 Automatic or the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation?

At MSRP the Hemel HD24 Automatic is the cheaper of the two at $300, against $2,800 for the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation — a $2,500 gap before any retailer discounting.

Which has a longer power reserve, the Hemel HD24 Automatic or the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation?

The Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation carries a 45-hour power reserve against 40 hours on the Hemel HD24 Automatic.

What movement does the Hemel HD24 Automatic run compared to the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation?

Both watches run automatic movements — the Hemel HD24 Automatic uses the Seiko NH38A and the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation uses the 6L37.

Side by side

Hemel HD24 AutomaticvsSeiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation

Q: Which is bigger, the Hemel HD24 Automatic or the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation?

The Hemel HD24 Automatic wears larger at 40mm versus 39.5mm for the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation — a 0.5mm difference across the dial.

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Hemel HD24 Automatic

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MSRP $300

Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation

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MSRP $2,800

At a glance

13 of 29 specs differ

Diameter

HD24 Automatic40mm

Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation39.5mm

Power Reserve

HD24 Automatic40h

Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation45h

Water Resistance

HD24 Automatic200m

Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation200m

MSRP

HD24 Automatic$300

Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation$2,800

Full specifications

Case

4 specs

Diameter

40mm

39.5mm

Thickness

13mm

12.3mm

Lug-to-Lug

48mm

47.2mm

Material

316L Stainless Steel

Stainless Steel

Crystal & Dial

5 specs

Crystal

Domed Sapphire

Sapphire

Crystal Shape

Flat

Box

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

Gallant USAF Edition

Black

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Seiko NH38A

6L37

Power Reserve

40h

45h

Jewels

Pricing

1 specs

MSRP

$300

$2,800

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